Halp to eobbet macdonald



(ModeL) N. VAN HILT'MAY'ER.

STUMP BXTRAGTOR.

.7 Patented July 4,1882.

N4 PETERS. moutho m lw. Wahingiom n. C.

UNITED STATES PATENT OFFICE,

NIKLAS VAN HILTMAYER, OF PORT HURON, MICHIGAN, ASSIGNOR OF ONE- HALF TO ROBERT MACDONALD, OF INGERSOLL, ONTARIO, CANADA.

STU M P- EXTRACTO R.

SPECIFICATION forming part of Letters Patent No. 260,508, dated July 4, 1882.

Application filed October 1 1881. ModeL) To all whom it may concern Be it known that I, NIKLAsVAN HILT- MAYER, of Port Huron, in the county of St. Clair and State of Michigan, have invented a new and Improved Stump-Lifter; and I hereby declare the following to be a full, clear, and exact description thereof, reference being had to the figure representing a side view in the accompanying drawing, making a part of this specification.

The object of my invention is to provide a stump-puller easily transportable, cheapin construction, and extensive in power; and it consists of a frame provided with links to attach it to a tripod or other support, and carrying oscillating linked levers, in combination with a vertical sliding rod or bar provided with holes and pins, as hereinafter more fully described.

In order that those skilled in the art can make and use my invention, I will proceed to describe the manner in which I have carried it out.

In the said drawing, A is a frame, coinposed of two plates, a a, divided by transverse ribs or rods betweentheir ends, and bolted together by bolts b b b b, and having cut entirely through both the plates slots I 1, provided with links f f, by which to suspend it.

Passing between plates at a is a bifurcated lever, D D, and it is pivoted at c. Pivoted to the said levers extremity, at n, is a bar or rod, S, having its other end pivoted in lever E E at P; and pivoted at m on lever D D is abar or rod, S, having its other end pivoted to the.

end of another bifurcated lever, E E, at 0. Lever E E is constructed like D D, and is pivoted in the frame at c. In each instance thelegs of the bifurcated levers are inclosed in the plates a a, and rest on their pivots on each side of it, and are connected with levers or handles H H by bars or rods G G, pivoted at g g and h it, while thelevers or handles H H are pivoted at k k to transverse plates or bars between plates or a and bolted byholt-s b b;

Plates a a have a vertical longitudinal cut, r, in them, through which passes a sliding bar, B B, perforated with a line of holes, at d, to suit the size of pins, 12 1), designed to be placed in them. It will be seen that the bars or rods S S and G G always keep the levels D D and E E parallel, and require them to move in opposite directions, and they become levers of the first order alternately as they change position, the pivots e 0' being the fulcrums. At the lower end of bar B B is a head, T, to fasten to the tackle or rope around the stump.

The operation is as follows: Links ff are fastened to the tripod, tree, limb, or any convenient resisting medium, and the head T fastened to the stump, pin pbeinginserted through slot I into one of the holes in bar B, and lever D D resting against it. When power is applied to handle H to force it down, the bar 13 is forced upward, depressing the end of lever E E so far that a pin can be placed over it through slot 1', and it in turn lifts bar B until the levers come back into the original position, when the operation is repeated, the pins being moved from hole to hole, gradually forcing bar B upward, and with it the stump.

Having thus fully described my invention,

what I claim as new, and desire to secure by Letters Patent, is

The frame A, constructed as described, and perforated sliding bar B, in combination with levers D D and E E and handles H H, pivoted at 0 e and k k, and provided with conlnecting bars or rods S S and G G and the pins 19 p, as set forth.

, NIKLAS VAN HILTMAYER. Witnesses:

ROBERT MCDONALD, HoRAcE BAKER. 

